Set Odometer and Run Hour counts - 0x0012 and 0x0013

Set an initial Odometer or Run Hour reading on the device, via API call

Written by Iman Kareem

Updated at March 18th, 2025

Table of Contents

Before you start Description 0x0012 - Set Odometer Request Example 0x0013 - Set Run Hours

Before you start

Ensure you have reviewed:

A full list of API calls can be found at: https://api.oemserver.com/swagger/index.html.

Description

The following messages can be sent in order to set an initial Run Hours or Odometer reading on a device. For use with On Device Run Hours.

0x0012 - Set Odometer Request Example

Payload:

Offset	Length	Data Type	Description
0	4	UINT32	The odometer value in metres/10

Example:

{ 
"MessageType":18, // 0x0012 – Set Odometer,
"CANAddress":4294967295,   //0xFFFFFFFF,//HOST_ADDRESS
"Data":[232,03,00,00],   //See below
"ExpiryDateUTC":"2018-07-20T18:25:43.511Z"
}

The above example sets the odometer reading to 10km = 10 000m. The unit/LSB is 10m therefore,

10 000m/10m = 1000 = 0x3E8

Converting this to Little Endian = E8 03 00 00

Then we send the byte array in JSON format

E8 = 232
03 = 03
00 = 00
00 = 00

Giving:
[232, 03, 00, 00]

0x0013 - Set Run Hours

Payload:

Offset	Length	Data Type	Description
0	4	UINT32	The run hours value in seconds

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